#include <iostream>
using namespace std;

int count(int x, char c, int y)
{
	switch(c)
	{
		case '+':
			return x + y;
		case '-':
			return x - y;
		case '*':
			return x * y;
		case '%':
			return x % y;
		case '/':
			return x / y;
	}
}

int main()
{
	int a, b;
	char c;
	cin >> a >> c >> b;
	cout << count(a,c,b) << endl;
	return 0;
}
